main {
  padding-bottom: 200px;
}
main .banner {
  position: relative;
  width: 100%;
  height: 810px;
}
main .banner .swiper {
  width: 100%;
  height: 100%;
}
main .banner .swiper-slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
main .banner .swiper-pagination {
  position: absolute;
  bottom: 30px!important;
}
main .banner .swiper-pagination-custom {
  bottom: 5%;
  left: 0;
  width: 100%;
  height: 30px;
  text-align: center;
}
main .banner .swiper-pagination-customs {
  width: 30px;
  height: 30px;
  display: inline-block;
  background-color: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  margin: 0 80px;
}
main .banner .swiper-pagintion-customs-active {
  width: 30px;
  height: 30px;
  background-color: white;
  z-index: 9;
}
main .banner .text_count {
  position: absolute;
  top: 300px;
  left: 100px;
  color: white;
  text-align: left;
  line-height: 50px;
}
main .banner .text_count2 {
  position: absolute;
  top: 200px;
  left: 166px;
  color: white;
  text-align: left;
  line-height: 50px;
}
main .banner .text_count3 {
  position: absolute;
  top: 150px;
  right: 70px;
  color: white;
  text-align: right;
  line-height: 50px;
}
main .about_box {
  display: flex;
  justify-content: space-between;
  padding-top: 70px ;
}
main .about_box .left_box {
  width: 880px;
}
main .about_box .left_box .left_box > p {
  margin: 50px 0;
}
main .about_box .left_box ul {
  width: 100%;
  list-style: none;
  display: flex;
  margin-top: 140px;
}
main .about_box .left_box ul li {
  margin-right: 100px;
  line-height: 40px;
}
main .about_box .right_box {
  position: relative;
}
main .about_box .right_box .img {
  position: relative;
  background-image: url(../img/u110.png);
}
main .about_box .right_box .img .btn_box {
  position: absolute;
  display: inline;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
main .about_box .right_box .img .btn_box span {
  display: block;
  width: 100px;
  height: 100px;
  border: 2px solid white;
  border-radius: 50%;
  cursor: pointer;
}
main .about_box .right_box .img .btn_box span p {
  border: 25px solid transparent;
  border-left-color: white;
  margin-top: 50%;
  margin-left: 50%;
  transform: translate(-25%, -50%);
}
main .about_box .right_box p {
  text-align: center;
}
main .course {
  padding-top: 258px;
}
main .course > div {
  width: 100%;
  overflow: hidden;
  position: relative;
  height: 300px;
}
main .course > div .event {
  width: 1995px;
  margin-top: 260px;
  position: absolute;
  cursor: pointer;
  bottom: 50px;
}
main .course > div .event > hr {
  border: 1px solid black;
}
main .course > div .event > :nth-child(1) {
  margin-left: 40px;
}
main .course > div .event > :nth-child(2) {
  margin-left: 310px;
}
main .course > div .event > :nth-child(3) {
  margin-left: 630px;
}
main .course > div .event > :nth-child(4) {
  margin-left: 928px;
}
main .course > div .event > :nth-child(5) {
  margin-left: 1050px;
}
main .course > div .event > :nth-child(6) {
  margin-left: 1250px;
}
main .course > div .event > :nth-child(7) {
  margin-left: 1470px;
}
main .course > div .event .count {
  list-style: none;
  position: absolute;
  bottom: -46px;
}
main .course > div .event .count li {
  display: flex;
  flex-direction: column;
}
main .course > div .event .count li .count_img {
  visibility: hidden;
  opacity: 0;
  list-style: none;
  display: flex;
  width: 400px;
  height: 170px;
  border-radius: 12px;
  box-shadow: 0 0 5px 2px rgba(0, 0, 0, 0.3);
  transition: all 0.2s;
}
main .course > div .event .count li .count_img li {
  width: 200px;
}
main .course > div .event .count li .count_img li img {
  padding: 15px;
  width: 170px;
  height: 150px;
}
main .course > div .event .count li .count_img li p {
  margin: auto 10px;
}
main .course > div .event .count li span {
  display: block;
  cursor: pointer;
  margin-top: 20px;
  margin-left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 30px;
  background-color: #1296db;
  border-radius: 50%;
  box-shadow: 0 0 5px 2px rgba(0, 0, 0, 0.3);
  z-index: 2;
}
main .course > div .event .count li > .count_img.active {
  visibility: visible;
  opacity: 1;
}
main .course > div .event .count li > span.active {
  background-color: #ff9900;
}
main .cooperate {
  padding-top: 100px;
  position: relative;
}
main .cooperate ul {
  list-style: none;
  display: flex;
  margin-top: 50px;
  flex-wrap: wrap;
  justify-content: start;
}
main .cooperate ul li {
  width: 300px;
  height: 150px;
  box-shadow: 0 0 5px 2px rgba(0, 0, 0, 0.3);
  border-radius: 12px;
  margin: 15px 54px 15px 0;
}
main .cooperate ul li img {
  width: 270px;
  height: 84px;
  margin: 35px 15px;
}
main .cooperate ul :nth-child(1) {
  object-fit: cover;
}
main .cooperate ul :nth-child(3) img {
  object-fit: none;
}
main .cooperate ul :nth-child(4) img {
  object-fit: scale-down;
}
main .cooperate ul :nth-child(5) img {
  object-fit: scale-down;
}
main .cooperate ul :nth-child(6) img {
  object-fit: none;
}
main .cooperate ul :nth-child(7) img {
  object-fit: cover;
}
